Trolley shoe



June 1s, 1925, 1,542,572A

J. F. oNEAL TROLLEY SHOE Filed June 2, 1922 sire the same tobeiunderstood as illustrative ing a part hereof, y

Patented June 16, 1925.

i 1,542,572 PATENT o FFIcE.

JAY r. oNEAnoF WATERLOO, iowa.

TROLLEY ,SI-ICE; f

Application med June 2,

To all whom it may concern:

Be it lmownthat I, JAY F. ONEAL, a lciti'- Zen of the United States,residing at lVater loo, Iowa, have `invented certain Vnew and usefulImprovements in'` rlrolley Shoes, Of which thefollowingfisaspeciiication.

My invention pertains to that class ol devices which lare used inIconnection with trolvide a structure ofthe character indicated whichwill obviate the necessity of using any special form of. trolley wheelor harp; to'provide a structurevfor the purposeY indicated which can beused along the lines equip )ed with block signal mechanism; and suchiurther objects, advantages, and capabilities as will later more fully`appear. y

My invention further resides in the combination, construction, andarrangement of parts illustrated in the accompanying drawing and, whileIhave shown therein a preferred embodiment' of my4 invention, I deonlyand not as limiting said invention.V

In the drawing annexed hereto and torm- Fig. 17s a fragmentary elevationof a y trolley pole. and harp, carryingV my new at- Y tachment betweenthejharp and the trolley wheel.

Fig. 2 is an end `elevation of the structur shown in Fig.. 1.

plane indicated by the line 3 3 Fig. 2.

V ture shown in Fig. 1.

Y drawing, numeral 1` designatesfthe trolley- Fig. l.lis a broken planview of the. struc- Fig. 5 is a sectional tially along the planeindicated bythe "line 5 5 Fig. 3. W. Referring more in detail to theannexed pole, 2 an ordinary harp, 3k an ordinary trolley wheel, and f1denotes generally the attachment constituting the subject4 matter otmyfV invention. .This` attachment .com-L prises .supporting meansconsisting essentially of a pairfof side'plates anda comf bined weightand wear plate 6, ythe wear elevation vvsubstani 1922. serial no.565,309. 1

plate boing denoted speciiicallyby the numeral 7 and the remainder of'the weight by the vnumeral 8. The parts 7 and 8 are secured betweentheside plates 5 by means of bolts 9 and 10. The side plates 5 are providedontheirexterior faces, approximately centrally, with trunnionsll whichmay be Ainserted into the bearings 12 of the harp which, as has beenindicated above, is an ordinary vharpvsuch as is customarily found ontrolley poles of the type shown.4 When the trunnions 11 have beeninserted in the" bearings 12 weight 8 andwear plate 7 are insertedbetween the side plates andsecured in place by means of bolts 9 and 10.vTrolley wheel 3 is then insertedbetween the free ends of the side plates5 andpivot pin 13 isslipped through the aligned openingsv in the trolleywheel and side plates andsecured in place by means of a cotter pin orother suitable means. Side plates 5` are yprovided at suitablelocations, such as along their edges,.with appropriate stop vmembers 14and V15, which serve to limitthe amount of rotation off the attachmentabout its pivot 11. 'In the construction shown this rota.

tion may be as muchas approximately 150.

.VVhenmoving forwardly as indicated by the solid' arrow in Fig. 1, theparts will occupy the relative positions shown in solid klines in thisfigure, which puts the wear plate 7 in contact withthetrolley Vwire 16land wheel S'outoi1 contact. therewith, as shown most clearly'in Fig. 3,

YFrom the Jforegoing description itv will be apparent that if the wearplate?? becomes unduly worn from use the boltlO may be removed and thena new wear plate can be -substituted for the one removed. @wing to thepeculiar shape of the partsf 7 'and 8 Fig. 3 is a sectionsubstantiallyalong the there will besubstantially no looseness and relative movementot these parts when secured in position. `Since .the trunnions 11 areformed on the 'external faces of the platesV 5 4the attachment cannot;become loosenedffrom `the harp anddrop`fout, fthe parts being held inposition by means of the bolts9 and 1Q as isy obvious.- Also, since the"pivot V'member 13 is secured to one orboth of the plates' 5, thesecurity of these plates within the harp 2 is rendered doubly sure. Theshape of the attachment is such that. when used in connection witha'line provided with blockv signal mechanism the car may move eitherforwardly 'or baclrwardly and the trolley will work with equal facilityin either direction. W'hen the car starts to back, as shown by thedotted `arrow in Fig. l, the parts turn on pivots l1 into the dottedline position shown in this figure with both trolley wheel and wearplate contacting the wire. When the car again starts to move forwardly,the attachment carrying wheel 3 will turn around its pivots l1 until theparts are again in the relative positions shown in solid lines in Fig.l.

The fact that this device can operate bot-h forwardly and rearwardly inconjunction with block signal mechanism (as distinguished from priordevices of this type) is considered very important.

It is of course understood that the specific description of structureset forth above may be departed from without departing from the spiritof my invention as set forth in this specification and the appendedclaims.

Having now described my invention, I

` claim y on the opposite side thereof and being adapted to pivotallysupport the trolley wheel in the light side and when so supporting thetrolley wheel the lighter side is heavier than the opposite side.

2. In al structure of the character described, a trolley harp, a shoepivoted therein intermediate its ends, and a trolley wheel pivoted invone end of the shoe and capable of rotating freely in either direction,saidend carrying the trolley wheel being heavier than the opposite endand normally tending to hold said opposite end up in contact with Vthetrolley wire.

3. In a structure of the character described, a shoe for insertionbetween the harp and wheel of a trolley pole, said shoe being pivoted inthe harp bearings kand having the wheel pivoted therein and comprising apair of spaced side plates each carrying a pivot for the trolley wheeland provided-with trunnions for the pivoting of the yshoe inthe harp, ablock secured between the V,side plates and holding the saine at a xedjdistance apart, and a removable and replaceable element normallysliding on the trolley wire when in use, located between the sideplates. l

4. In a structure of the. character described, vmeans to be insertedbetween a i standard trolley wheel and harp, comprising a grooved shoeprovided with pivots mounted in the harp bearings, said shoe having'bearings for the. reception of the trolley wheel pivot, and a trolleywheel having its ypivot mounted in said bearings, the moment of theweighted portion ot the shoe about its axis being less than that of the`trolley wheel about said axis.

5. An attachment to be inserted between a standard trolley wheel andharp comprising a pair of complementary plates provided on theirexterior faces with trunnions, one end of said attachment being providedwith trolley wheel bearings and the opposite side being weighted toenable the attachment to be easily turned about its pivot. Y

G. In an attachment of thecharacter described, a pair of side platesprovided approximately centrally with outwardly eX- tending trunnions, ashoe located between lie side plates and tothe opposite sides of whichthe plates are. secured, said shoe comprising two separable parts one ofwhich constitutes a replaceable wear plate to en'- gage the trolley wirein normal condition of use.

7. Iii an attachment of the character described, a pair of side platesprovided approximately centrally with outwardly extending trunnions, ashoe located between the side plates and to the opposite sides of whichthe plates are secured, said shoe coinprising two separable parts one ofwhich constitutes a replaceable wear plate to engage the trolley wire innormal condition of use, and the other -of which normally remains fixedbetween the side plates.

8. In an attachment of the character described, a pair of side platesprovided approximately centrally with outwardly extending truniiions, acombined weight and shoe located between the side plates and to theopposite sides of which the platesv aie secured, said combined weightand shoe coniprising two separable parts one of which constitutes areplaceable wear plate to engage tlie trolley wire in normal conditionof use, and the Vother of which normally i'emains fixed between the sideplates, said attachment having projections which normally serve as stopmembers to limit the amount of rotation of the attachment about itspivots by engagement of said sides of the harp.

projections with the Y 9. An attachment to beiinserted between l astandard trolley wheel and harp comprising a pair of complementaryplates provided on their exterior faces with trunnions,

said attachment being provided with trolleyY com risinO an attachmenthavin@ lateral C C trunnions adapted to engage the usual trolley wheelbearing of a standard liarp,rsaid attachment having a peripheral grooveto receive the trolley Wire and provided with spaced bearings of a sizeadapted to receive the standard pivot pin of the usual trolley Wheel. v

11. An attachment to be inserted between a standard trolley Wheel andharp comprising means provided With trunnions to engage the harp topermit said means to shift relatively to said harp, said means havingtrolley Wheel bearings and provided With a detachable Wear plate toengage the trolley Wire in the normal condition of use.

12. A device of the character described comprising supporting meanshaving lateral trunnions adapted to engage the trolley Wheel bearing ofa harp, said supporting means having a peripheral groove and providedWith spaced bearings of a size adapted to receive the pivot pin of thestandard size trolley' Wheel. n l

In Witness whereof, I hereunto subscribe my name to this specificationin the presence of two Witnesses:

JAY F. ONEAL. Witnesses:

L. F. NOTTGER,

C. B. JOHNSTON.

